Oil immersed transformers adopt insulating oil for insulation and cooling without strict indoor fire-proof limits. Featuring strong heat dissipation, large load capacity and low cost, they can be installed outdoors or in dedicated transformer rooms. Widely used in power grids, industrial plants, mines and rural power stations with large power supply demands.

Dry-type transformers adopt air and epoxy resin for insulation and cooling without flammable insulating oil. Featuring fire resistance, environmental safety and low maintenance, they can be installed indoors directly. Widely used in shopping malls, hospitals, high-rise buildings and underground spaces with strict fire protection requirements.